TX START

TX_START and TX_END are the delimiter marker lumps for stand-alone textures (as opposed to multipatch textures defined through TEXTURE1 and TEXTURE2).

Originating from ZDoom in 2003, this feature has since been adopted by a several other source ports. Image lumps within this namespace are allowed to be in either Doom's internal patch format or the standard PNG format. The Eternity Engine will also tolerate raw linear graphics with certain regular dimensions.

The corresponding directory for this namespace in a ZIP-format archive is textures/.

Support
Ports implementing the TX_START/TX_END namespace include:
 * EDGE and 3DGE
 * The Eternity Engine
 * GZDoom
 * Skulltag and Zandronum
 * Vavoom
 * ZDoom